long double cleanup, initial commit

[musl] / src / math / ilogbl.c

diff --git a/src/math/ilogbl.c b/src/math/ilogbl.c
index 1512934..7df6eb6 100644 (file)
--- a/src/math/ilogbl.c
+++ b/src/math/ilogbl.c
@@ -10,12 +10,12 @@ int ilogbl(long double x)
 int ilogbl(long double x)
 {
        union ldshape u = {x};
-       uint64_t m = u.bits.m;
-       int e = u.bits.exp;
+       uint64_t m = u.i.m;
+       int e = u.i.se & 0x7fff;
 
        if (!e) {
                if (m == 0) {
-                       FORCE_EVAL(0/0.0f);
+                       FORCE_EVAL(x/x);
                        return FP_ILOGB0;
                }
                /* subnormal x */
@@ -25,7 +25,7 @@ int ilogbl(long double x)
        if (e == 0x7fff) {
                FORCE_EVAL(0/0.0f);
                /* in ld80 msb is set in inf */
-               return m & (uint64_t)-1>>1 ? FP_ILOGBNAN : INT_MAX;
+               return m << 1 ? FP_ILOGBNAN : INT_MAX;
        }
        return e - 0x3fff;
 }